Charles Hsu Cheng-Yi

Someone in a prison run by a corrupt warden fakes the deaths of convicts to later use them as expendable assassins. A police officer is sent into the prison to gather evidence of the corruption.

On the way to a visit of their uncle in Thailand, Fatty bumps into a young girl named Baiyer. Daughter of a famous anthropologist, Baiyer has in secret possession a golden necklace on which is engraved the map of an ancient treasure by her father. Having witnessed the murder of her father by Scorpio. They befriend with each other and return to Bangkok.

4th installment to the Naughty Cadets series.